John Lennon left plenty to celebrate: his songs, of course, from “A Hard Day’s Night” to “Strawberry Fields Forever” to the joyful, post-Beatles contentment of “Double Fantasy.” There’s also the introspection of his interviews, the literary wit of such books as “In His Own Write” and a variety of artworks.

The latter are having a belated moment in a traveling exhibit that will include stops this month in New York, Denver, Toronto and San Francisco.